DevOps Foundations: Understanding Servers, Virtualization, and Hypervisors
Md Sharjil Alam
Hey Hashnode Community!
As I continue my DevOps learning journey, I’ve dived into some fundamental concepts essential for building and maintaining modern IT infrastructure. In this article, I’ll break down key ideas around servers, virtualization, and hypervisors.
Table of Contents
What is DevOps?
DevOps is a set of practices and cultural philosophies aimed at improving collaboration between development (Dev) and IT operations (Ops) teams. It focuses on continuous integration, continuous delivery, automation, and infrastructure as code to shorten the software development lifecycle and increase the frequency of releases.
What is a Server?
A server is a specialized computer that provides resources, services, or data to other computers over a network. Servers are designed to be reliable and powerful, often hosting websites, managing databases, or handling complex computations.
Physical vs. Virtual Servers
Physical Servers: These are standalone hardware machines with dedicated resources. They offer high performance but come with higher costs and less flexibility.
Virtual Servers: Virtual servers are abstracted from physical hardware through virtualization, allowing multiple virtual machines (VMs) to run on a single physical server. This approach improves resource utilization, scalability, and cost efficiency.
Hypervisors
Hypervisors are software tools that create and manage virtual machines (VMs) on physical servers. They are essential in virtualization, enabling the efficient use of resources.
Type 1 (Bare-Metal): Directly interacts with the physical hardware, offering better performance and efficiency for production environments.
Type 2 (Hosted): Runs on top of a host operating system, making it suitable for development and testing.
Conclusion
Understanding these concepts is vital for anyone involved in DevOps, as they form the foundation for modern, scalable, and efficient IT environments.
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